taskes one or more .l files and compiles them
#!/usr/bin/csh
#while loop to carry on asking user to enter the files
while $number!=0
echo "enter file name"
#check to see if file ends with .l
#if file ends with .l compile lexx.yy.c file for each file
this is how i think it needs... (1 Reply)
Experts,
I tried to make my cshell script interactive by asking the user for password and trying to read the input using the "read" command. I have been unsuccessful so far. Do you have any idea ?
Thanks
Jim (2 Replies)
Hi Everyone,
I'm facing a problem using grep in Cshell.
This is what i'm trying to do:
grep "abc" somefile
VAR="$?"
echo $VAR
somefile contains:
abc
def
ghi
Now, should'nt my output be 0 (Zero)
I'm getting 1 (One)
Can you please help me out.
Thanks in advance :)
G1 (2 Replies)
Hello...
I am new to unix and I am wondering if in a C-shell script , Are we supposed to use only whole numbers........ for example..if a program needs to calculate the average of some numbers........
@ avg = (($1 +$2 + $3)/3)) is returning a whole number.........How can a decimal be achieved... (1 Reply)
Hi guys,
Basically I'm trying to write a CShell script that calls an awk script on a given directory (given in command-line). I keep getting a syntax error with my code though:
#!/bin/csh
set dir = $ARGV
foreach file ( $dir/* )
set output = 'awk -f /Desktop/aal $file'
echo... (3 Replies)
If I want to compare two string variables in csh how do I correctly implement it. For example I'm checking if on cmdln the $1 == -r do something.
if($1 == -r) then
code....
However when I run it I just get an error message "if: Missing file name".
Any suggestions? (1 Reply)
Hello everyone! i'm new in this forum and I'm here because I have a huge problem with a csh script. Here the problem: I have to write a script that check the system status, more precisely I have to check if there are processes with TIME > 3 hours and if such processes exists I must send a mail... (3 Replies)
Hi I am trying to put the following commands that i have to type manually at the cshell prompt into a cshell script startup.csh which is copied below
echo $DISPLAY
xhost +
rsh ba08lo01
module load incisiv/102/10.20.035
setenv DISPLAY $DISPLAY
When i run the script with source command... (2 Replies)
Hi,
I am unable to call one script from another script in c shell on windows SUA environment.
Please find below code ,
File1 āTmp.csh:
#!/bin/csh
setenv PATH "${PATH}:.:$TOP/bin:$TOP/RMBIN/bin:$GP_SUA/:$INTERIX_ROOT"
echo "hi1"
. /tmp1.csh
File2ātmp1.csh
... (6 Replies)
Hello Guys,
I would like to ask you for a favor. Could you please help me how can I assign any number as the parameter to a, from stdin (-c), in the following command line by using the 'switch' in a script?
awk '$8>a {print "File name:" $5,$8}'
I would also appreciate if you can share any... (1 Reply)
Perl::Critic::Policy::InputOutput::ProhibitBacktickOperaUser(Contributed Perl DocumPerl::Critic::Policy::InputOutput::ProhibitBacktickOperators(3)NAME
Perl::Critic::Policy::InputOutput::ProhibitBacktickOperators - Discourage stuff like "@files = `ls $directory`".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Backticks are super-convenient, especially for CGI programs, but I find that they make a lot of noise by filling up STDERR with messages
when they fail. I think its better to use IPC::Open3 to trap all the output and let the application decide what to do with it.
use IPC::Open3 'open3';
$SIG{CHLD} = 'IGNORE';
@output = `some_command`; #not ok
my ($writer, $reader, $err);
open3($writer, $reader, $err, 'some_command'); #ok;
@output = <$reader>; #Output here
@errors = <$err>; #Errors here, instead of the console
CONFIGURATION
Alternatively, if you do want to use backticks, you can restrict checks to void contexts by adding the following to your .perlcriticrc
file:
[InputOutput::ProhibitBacktickOperators]
only_in_void_context = 1
The purpose of backticks is to capture the output of an external command. Use of them in a void context is likely a bug. If the output
isn't actually required, "system()" should be used. Otherwise assign the result to a variable.
`some_command`; #not ok
$output = `some_command`; #ok
@output = `some_command`; #ok
NOTES
This policy also prohibits the generalized form of backticks seen as "qx{}".
See perlipc for more discussion on using "wait()" instead of "$SIG{CHLD} = 'IGNORE'".
You might consider using the "capture()" function from the IPC::System::Simple module for a safer way of doing what backticks do,
especially on Windows. The module also has a safe wrapper around "system()".
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.16.3 2014-06-09 Perl::Critic::Policy::InputOutput::ProhibitBacktickOperators(3)